Apple has secured supplies of G4 processors until 2008.

The company has reached a deal with Freescale Semiconductor (formerly Motorola) under which the latter firm will "supply microprocessors for orders placed by Apple through to the end of 2008."

In a regulatory filing, Apple confirmed that the August 22 agreement places it under no obligation to buy the processors other than, "for work in progress that was in place at the time the agreement was executed".

"We will continue to meet Apple's needs throughout the transition process," Freescale spokesman Glaston Ford told MarketWatch.